Motor frame, motor, fan and air conditioner

Abstract

The present application generally relates to the field of motor technology, and specifically, to a motor frame, a motor, a fan and an air conditioner, wherein the frame includes a frame body and a first limiter, the first limiter is installed on the frame body, the first limiter includes a first limiter portion and a second limiter portion, the first limiter portion extends along the axial direction of the frame body, the first limiter portion limits the movement of the bridge wire toward the inner side of the frame body, the second limiter portion protrudes from the circumference of the first limiter portion, and the second limiter portion limits the movement of the bridge wire in the axial direction of the frame body. In the present application, the limiter limits the movement of the bridge wire to prevent the bridge wire from hitting the motor control board or the rotor, thereby avoiding electrical safety accidents such as poor voltage resistance and short circuit in the motor.

Description

Technical Field

[0001] The present application generally relates to the field of motor technology, and in particular, to a motor frame, a motor, a fan and an air conditioner. Background Art

[0002] At present, the winding bridge wire inside the motor is easily lifted up and touches the motor control board or rotor, causing electrical safety accidents such as poor voltage resistance and short circuit in the motor. The rotor rotates and rubs and breaks the bridge wire, causing open circuit or short circuit, resulting in abnormal accidents such as motor failure. Summary of the invention

[0003] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0004] In order to solve the technical problem of electrical safety accidents caused by the movement and warping of the bridge wire, the main purpose of the present application is to provide a motor frame, a motor, a fan and an air conditioner.

[0005] In order to achieve the above invention objectives, this application adopts the following technical solutions:

[0006] A motor frame, comprising:

[0007] Skeleton body;

[0008] A first limiting member, mounted on the frame body;

[0009] Among them, the first limiting member includes a first limiting portion and a second limiting portion, the first limiting portion extends along the axial direction of the skeleton body, the first limiting portion limits the bridge line from moving toward the inner side of the skeleton body, and the second limiting portion protrudes from the peripheral side of the first limiting portion, and the second limiting portion limits the bridge line from moving in the axial direction of the skeleton body.

[0010] Furthermore, in some embodiments of the present application, the first limiting member further includes an elastic portion for connecting to the motor control board, the first limiting portion is provided with a mounting hole, and a portion of the elastic portion is mounted in the mounting hole.

[0011] Furthermore, in some embodiments of the present application, the second limiting portion has a limiting surface facing the skeleton body, the limiting surface extends obliquely from the root of the second limiting portion toward the skeleton body, and the profile of the limiting surface is a concave arc shape.

[0012] Furthermore, in some embodiments of the present application, a plurality of the first position-limiting members are provided, and the plurality of the first position-limiting members are arranged at intervals along the circumferential direction of the skeleton body.

[0013] Furthermore, in some embodiments of the present application, the second limiting portion is respectively provided on two opposite sides of the first limiting portion in the circumferential direction of the skeleton body.

[0014] Furthermore, in some embodiments of the present application, the skeleton body is provided with a second position-limiting member, and the second position-limiting member has a positioning portion for assembling with the motor control board.

[0015] Furthermore, in some embodiments of the present application, the second limiting member has a limiting structure protruding from the positioning portion in the circumferential direction of the skeleton body, and the limiting structure limits the movement of the motor control board toward the skeleton body.

[0016] A motor comprises a stator and a rotor matched with the stator, wherein the stator comprises a stator core, a winding and the motor frame, and the stator core and the winding are assembled on the motor frame.

[0017] A fan comprises an impeller, a volute and the above-mentioned motor, wherein the impeller is located in the volute and the motor is connected to the impeller.

[0018] An air conditioner comprises an outdoor unit, wherein the outdoor unit is equipped with the above-mentioned fan.

[0019] It can be seen from the above technical solutions that the advantages and positive effects of the motor frame, motor, fan and air conditioner of the present application are:

[0020] Limit the movement of the bridge wire to prevent it from hitting the motor control board or rotor, and avoid electrical safety accidents such as poor voltage resistance and short circuit in the motor.

[0021] On the one hand, the present application provides a motor frame, which includes a frame body and a first limiting member, wherein the first limiting member is installed on the frame body, and the first limiting member includes a first limiting portion and a second limiting portion, wherein the first limiting portion extends along the axial direction of the frame body, and the first limiting portion limits the movement of the bridge wire toward the inner side of the frame body, and the second limiting portion protrudes from the peripheral side of the first limiting portion, and the second limiting portion limits the movement of the bridge wire in the axial direction of the frame body.

[0022] On the other hand, the present application provides a motor, which is installed with the above-mentioned motor frame. The first limiter limits the bridge wire from moving toward the inside of the frame to prevent the rotor from rotating, rubbing and breaking the bridge wire, thereby preventing the motor from short-circuiting or opening the circuit. The second limiter limits the bridge wire from tilting up and contacting the motor control board to avoid electrical safety accidents such as poor voltage resistance and short circuit in the motor.

[0023] On the other hand, the present application provides a fan, which is equipped with the above-mentioned motor. Since the skeleton body is provided with a first limiter, the movement of the bridge line is restricted, the electrical safety of the motor is improved, and the stability of the fan operation is ensured.

[0024] The present application also provides an air conditioner, which is equipped with the above-mentioned fan and has good operating stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] Figure 1 is a schematic diagram of a motor skeleton according to an exemplary embodiment.

[0028] Figure 2 is a schematic top view of a motor skeleton according to an exemplary embodiment.

[0029] Figure 3 According to an exemplary embodiment, a first stopper of a motor frame is shown in Figure 2 Schematic cross-sectional view along the AA direction.

[0030] Figure 4 is a schematic diagram of a stator core of a motor according to an exemplary embodiment.

[0031] Figure 5 is a schematic diagram of a stator of a motor according to an exemplary embodiment.

[0032] Figure 6 is a schematic diagram of a stator assembly of a motor according to an exemplary embodiment.

[0033] Figure 7 is a schematic diagram of a motor control board of a motor according to an exemplary embodiment.

[0034] Figure 8 is a partial schematic diagram of a motor according to an exemplary embodiment.

[0035] Fig. 9 A motor according to an exemplary embodiment is shown Figure 8Schematic diagram of the cross-sectional structure along the BB direction.

[0036] The reference numerals are described as follows:

[0037] 100-motor frame; 200-stator core; 300-bridge wire; 400-winding; 500-stator; 600-housing; 700-motor control board; 800-stator assembly;

[0038] 110-first stopper; 120-second stopper; 130-frame body

[0039] 111-first limiting portion; 112-second limiting portion; 113-elastic portion; 114-mounting hole; 115-limiting surface;

[0040] 121-positioning part; 122-limiting structure;

[0041] 710-positioning hole; 720-electrolytic capacitor; 730-board body. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of this application. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0043] At present, the winding bridge wire inside the motor is easily lifted up and touches the motor control board or rotor, causing electrical safety accidents such as poor voltage resistance and short circuit in the motor. The rotor rotates and rubs and breaks the bridge wire, causing open circuit or short circuit, resulting in abnormal accidents such as motor failure.

[0044] In order to solve the technical problem of electrical safety accidents caused by the movement and tilting of the bridge line 300, the main purpose of the present application is to provide a motor frame 100, a motor, a fan and an air conditioner, wherein the motor is installed with the motor frame 100, the fan is installed with the motor, and the air conditioner is installed with the fan, wherein the motor frame 100 includes a frame body 130 and a first limiting member 110, the first limiting member 110 is installed on the frame body 130, the first limiting member 110 includes a first limiting portion 111 and a second limiting portion 112, the first limiting portion 111 is arranged along the frame body 130 The first limiting portion 111 extends axially, limiting the bridge wire 300 from moving inwardly of the skeleton body 130, preventing the bridge wire 300 from contacting the rotor, preventing the rotor from rotating and rubbing and breaking the bridge wire 300, thereby avoiding abnormal accidents such as short circuit and failure of the motor or fan. The second limiting portion 112 protrudes from the side of the first limiting portion 111, limiting the bridge wire 300 from moving axially of the skeleton body 130, preventing the bridge wire 300 from tilting and contacting the motor control board 700, and avoiding safety accidents such as poor voltage resistance and short circuit of the motor.

[0045] Figure 1 is a schematic diagram of a motor skeleton 100 according to an exemplary embodiment.

[0046] Figure 2 FIG. 1 is a schematic top view of a motor skeleton 100 according to an exemplary embodiment.

[0047] Figure 3 The first stopper 110 of the motor frame 100 is shown in accordance with an exemplary embodiment. Figure 2 Schematic cross-sectional view along the AA direction.

[0048] The embodiment of the present application provides a motor frame 100, a motor, a fan and an air conditioner. The motor is installed with the motor frame 100, and the fan is installed with the motor. Figure 1-3As shown, the motor skeleton 100 includes a skeleton body 130 and a first stopper 110 and a second stopper 120 disposed on the skeleton body 130. According to the understanding of those skilled in the art, in the embodiment of the present application, the first stopper 110 and the second stopper 120 can be integrally formed with the skeleton body 130, so as to reduce the processing steps of the motor skeleton 100 and improve the production efficiency. Alternatively, the first stopper 110 and the second stopper 120 are installed on the skeleton body 130 by a snap-fitting manner, so as to facilitate the maintenance and replacement of the first stopper 110 and the second stopper 120 and improve the versatility of the first stopper 110 and the second stopper 120. The skeleton body 130 can be made of polyester or nylon material. The skeleton body 130 isolates the winding 400 from the iron core to provide insulation protection, while increasing the creepage distance to make electrical safety more reliable. The material of the first limit portion 111 and the second limit portion 112 can be the same. The first limit portion 111 and the second limit portion 112 are integrally formed. When the material of the first limit portion 111 and the second limit portion 112 is metal, the structural strength of the motor skeleton 100 can be improved. When the material of the first limit portion 111 and the second limit portion 112 is plastic, they can be integrally injection molded with the skeleton body 130 to improve processing efficiency.

[0049] Combination Figure 1 and Figure 3 The first limiting member 110 includes a first limiting portion 111 and a second limiting portion 112. The first limiting portion 111 extends along the axial direction of the skeleton body 130, and the first limiting portion 111 limits the bridge line 300 from moving inwardly of the skeleton body 130. The second limiting portion 112 protrudes from the peripheral side of the first limiting portion 111, and the second limiting portion 112 limits the bridge line 300 from moving in the axial direction of the skeleton body 130.

[0050] In the embodiment of the present application, the first limiting portion 111 is a columnar structure, and the first limiting portion 111 extends along the axial direction of the skeleton body 130. According to the understanding of those skilled in the art, the cross-sectional profile of the first limiting portion 111 can be a polygon or an irregular shape formed by straight edges and arc edges.

[0051] The first limiting portion 111 is provided with second limiting portions 112 protruding on opposite sides in the circumferential direction of the skeleton body 130, and the second limiting portion 112 is located on the circumferential side of the upper end of the first limiting portion 111, so that there is a sufficient distance between the second limiting portion 112 and the skeleton body 130 for the routing of the bridge line 300, and at the same time prevents the bridge line 300 from tilting up and contacting the motor control board 700, so that the bridge line 300 can be effectively placed and positioned, avoiding abnormal accidents such as short circuit or open circuit of the motor, and making the fan operation safer and more reliable.

[0052] Since there is a certain vibration during the operation of the motor, in order to prevent the bridge wire 300 from coming out of the second limiting portion 112, in the embodiment of the present application, Figure 3 The second limiting portion 112 has a limiting surface 115 facing the skeleton body 130, and the limiting surface 115 extends obliquely from the root of the second limiting portion 112 toward the skeleton body 130. Preferably, the profile of the limiting surface 115 is in a concave arc shape, similar to the profile of the hook surface of a crescent hook, which effectively prevents the bridge wire 300 from escaping from the second limiting portion 112.

[0053] The upper end of the first stopper 110 is provided with a mounting hole 114 extending axially along the skeleton body 130. The mounting hole 114 is a blind hole. When the first stopper 111 is a cylindrical structure, the mounting hole 114 is coaxial with the first stopper 111, so that the wall thickness of the mounting hole 114 is the same, thereby ensuring the structural strength of the first stopper 110 and preventing the first stopper 110 from breaking. From the perspective of realizing the installation of the elastic part 113, the cross-sectional profile of the mounting hole 114 can be a polygon or an irregular shape formed by straight edges and arc edges.

[0054] The skeleton body 130 is generally annular in structure. Therefore, the number of first limit members 110 can be set in combination with the number of bridge lines 300 and usage requirements. When multiple first limit members 110 are provided, the multiple first limit members 110 are spaced apart along the circumferential direction of the skeleton body 130, and one second limit member 120, two second limit members 120 or multiple second limit members 120 can be provided between two adjacent first limit members 110.

[0055] The second limit member 120 is used to connect with the motor control board 700 to prevent the motor control board 700 from rotating circumferentially and moving radially on the motor frame 100. Therefore, technical personnel in this field can also set the number and position of the second limit members 120 according to design requirements. In the embodiment of the present application, three second limit members 120 are provided, and the three second limit members 120 are spaced apart in the circumferential direction of the motor frame 100, thereby achieving effective support and fixation of the motor control board 700.

[0056] refer to Figure 1-3 As shown, the second stopper 120 has a positioning portion 121 and a stopper structure 122, and the positioning portion 121 is used for assembly and connection with the motor control board 700. In the axial direction of the motor frame 100, the stopper structure 122 is protruded from the positioning portion 121, and when the positioning portion 121 is assembled with the motor control board 700, the stopper structure 122 can limit the motor control board from moving further toward the motor frame 100. Figure 3In the figure, the dotted line extending axially on the second limit member 120 serves as a dividing line between the limit body and the limit structure 122, and the portion outside the dotted line serves as the limit structure 122. Specifically, the second limit member 120 includes a limit body (not marked), a positioning portion 121 and a limit structure 122. The limit body is extended along the axial direction of the skeleton body 130, the positioning portion 121 is arranged at the upper end portion of the limit body, and the limit structure 122 includes a protrusion protruding from the limit body along the circumference of the skeleton body 130. In the embodiment of the present application, the limit body, the limit structure 122 and the positioning portion 121 are integrally connected.

[0057] The embodiment of the present application further provides a motor, which is equipped with the motor frame 100 mentioned above.

[0058] Figure 4 is a schematic diagram of a stator core 200 of a motor according to an exemplary embodiment. Figure 5 FIG. 5 is a schematic diagram of a stator 500 of a motor according to an exemplary embodiment.

[0059] refer to Figure 4 and Figure 5 As shown, the motor includes a stator assembly 800, a rotor, an end cover and a motor control board 700. The stator assembly 800 includes a housing 600 and a stator 500. The stator 500 is assembled in the housing 600. The rotor cooperates with the stator 500. The stator core 200, the motor frame 100 and the winding 400 are assembled to form the stator 500. The motor control board 700 is installed between the motor frame 100 and the end cover. Thermal conductive silicone is filled between the motor control board 700 and the end cover.

[0060] The bridge wire 300 of the stator extends from the winding 400 and then connects to other windings 400. The middle part of the bridge wire 300 is routed from the outside of the first limit piece 110 and the second limit piece 120. The first limit part 111 limits the bridge wire 300 from moving inside the skeleton body 130 to prevent the bridge wire 300 from contacting the rotor, preventing the rotor from rotating and rubbing and breaking the bridge wire 300, thereby avoiding causing the motor to open or short-circuit. The second limit part 112 protrudes from the side of the first limit part 111. The second limit part 112 limits the bridge wire 300 from moving in the axial direction of the skeleton body 130 to prevent the bridge wire 300 from tilting and contacting the motor control board 700, thereby avoiding safety accidents such as poor voltage resistance and short circuit in the motor.

[0061] Figure 6 is a schematic diagram of a stator assembly 800 of an electric machine according to an exemplary embodiment. Figure 7 FIG. 7 is a schematic diagram of a motor control board 700 of a motor according to an exemplary embodiment. Figure 8 is a partial schematic diagram of a motor according to an exemplary embodiment. Fig. 9A motor according to an exemplary embodiment is shown Figure 8 Schematic diagram of the cross-sectional structure along the BB direction.

[0062] Combination Figure 6 As shown, the stator 500 is installed in the housing 600, and the first limiting member 110 also includes an elastic portion 113. The elastic portion 113 is installed in the mounting hole 114 of the first limiting portion 111, and part of the elastic portion 113 extends from the upper end of the first limiting portion 111. In the embodiment of the present application, the elastic portion 113 is a spring structure, and the material can be metal or plastic with a certain elasticity. According to the understanding of those skilled in the art, the elastic portion 113 can also adopt a columnar structure or other structural forms to meet the requirements of being able to be compressed and having elastic restoring force. The elastic portion 113 corresponds to the shape of the mounting hole 114, and the contour of the mounting hole 114 is larger than the outer contour of the elastic portion 113, thereby ensuring that the expansion and contraction of the elastic portion 113 is not affected.

[0063] like Figure 7 The motor control board 700 includes a board body 730, on which an electrolytic capacitor 720 and other necessary electronic components for realizing functions, such as an integrated circuit and a power module, are installed. The main improvement of this application does not involve the specific structure of the motor control board 700, and no further introduction is made here. The motor control board 700 is provided with a positioning hole 710 for cooperating with the positioning portion 121, such as Figure 8 In the figure, the motor control board 700 is provided with a positioning hole 710 corresponding to the positioning part 121, the positioning part 121 is slidably matched with the positioning hole 710, the motor control board 700 is installed on the stator assembly 800 through the positioning part 121, the positioning part 121 is nested with the positioning hole 710, the positioning part 121 limits the circumferential rotation and radial movement of the motor control board 700, and the elastic part 113 is in contact with the motor control board 700.

[0064] At present, a plurality of convex cylinders are arranged on the skeleton inside the motor, and a plurality of corresponding circular holes are arranged on the control board, and they are nested and matched to support the control board, so that the heat dissipation components on the control board are in contact with the end cover through the thermal conductive silicone or the thermal conductive silicone ester to achieve the heat dissipation effect. After the motor runs for a long time, the thermal conductive silicone may age and become loose, and the good contact cannot be guaranteed, thereby affecting the heat dissipation effect and possibly causing the burning accident of the motor and the fan. In the embodiment of the present application, if Fig. 9As shown, the first stopper 110 has an elastic part 113. After the motor control board 700 is assembled, the motor control board 700 compresses most of the elastic part 113 into the mounting hole 114, and the elastic part 113 is deformed to generate a reaction force. The elastic part 113 presses the motor control board 700 toward the end cover, so that the electronic components on the motor control board 700 that need to dissipate heat are tightly attached to the thermal conductive silicone in contact with the end cover. During the operation of the motor, the good contact between the electronic components, the end cover and the thermal conductive silicone is maintained, ensuring the heat dissipation effect of the motor, thereby ensuring that the fan can operate normally. Further, since the elastic part 113 always applies a reaction force to the motor control board 700, the gap between the motor control board 700 and the end cover can be automatically adjusted according to the hardness of the thermal conductive silicone, thereby ensuring that the motor control board 700 and the end cover are always in good contact with the thermal conductive silicone, ensuring that the motor has a good heat dissipation effect, and ensuring that the motor and its fan will not have a burn-out accident due to excessive temperature rise.

[0065] This embodiment also provides a fan, including an impeller, a volute and the above-mentioned motor, wherein the impeller is located in the volute, and the motor is connected to the impeller to drive the impeller to rotate.

[0066] This embodiment also provides an air conditioner, including an outdoor unit, wherein the outdoor unit is equipped with the above-mentioned fan.

[0067] In summary, the present application provides a motor skeleton 100, a motor, a fan and an air conditioner, wherein the motor is installed with the motor skeleton 100, the fan is installed with the motor, and the air conditioner is installed with the fan, wherein the motor skeleton 100 includes a skeleton body 130, the skeleton body 130 is provided with a first limiter 110 and a second limiter 120, the first limiter 110 includes a first limiter portion 111, a second limiter portion 112 and an elastic portion 113, the first limiter portion 111 limits the bridge wire 300 from moving toward the inner side of the skeleton body 130, prevents the bridge wire 300 from contacting the rotor, avoids the rotor from rotating and rubbing and breaking the bridge wire 300, and causes an abnormal accident of failure of the motor or the fan, and the second limiter portion 112 The bridge line 300 is limited to move in the axial direction of the skeleton body 130, and the bridge line 300 is prevented from tilting and contacting the motor control board 700, so as to avoid safety accidents such as poor voltage resistance and short circuit of the motor. The elastic part 113 is squeezed by the motor control board 700 to exert a reaction force, so that the electronic components on the motor control board 700 that need heat dissipation are tightly attached to the thermal conductive silicone in contact with the end cover, thereby ensuring the heat dissipation effect of the motor, thereby ensuring the normal operation of the fan. The second limiting member 120 includes a positioning part 121 and a limiting structure 122. The positioning part 121 is nested with the motor control board 700 to prevent the motor control board 700 from rotating in the circumferential direction and moving in the radial direction. The limiting structure 122 can prevent the motor control board 700 from continuing to move toward the motor skeleton 100 when the elastic part 113 fails.

[0068] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0069] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the general inventive concept of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A motor frame, characterized in that: include: A skeleton body (130); A first stopper (110) mounted on the frame body (130); The first limiting member (110) includes a first limiting portion (111) and a second limiting portion (112), wherein the first limiting portion (111) extends along the axial direction of the skeleton body (130), and the first limiting portion (111) limits the bridge wire (300) from moving inwardly of the skeleton body (130), and the second limiting portion (112) protrudes from the circumference of the first limiting portion (111), and the second limiting portion (112) limits the bridge wire (300) from moving in the axial direction of the skeleton body (130). (110) also includes an elastic portion (113) for connecting to the motor control board (700), the first limiting portion (111) is provided with a mounting hole (114), a portion of the elastic portion (113) is mounted in the mounting hole (114), the second limiting portion (112) has a limiting surface (115) facing the skeleton body (130), the limiting surface (115) extends obliquely from the root of the second limiting portion (112) toward the skeleton body (130), and the profile of the limiting surface (115) is in the shape of a concave arc.

2. The motor frame according to claim 1, characterized in that: A plurality of the first limiting members (110) are provided, and the plurality of the first limiting members (110) are arranged at intervals along the circumferential direction of the skeleton body (130).

3. The motor frame according to claim 1 or 2, characterized in that: The second limiting portions (112) are respectively arranged on two opposite sides of the first limiting portion (111) in the circumferential direction of the skeleton body (130).

4. The motor frame according to claim 1, characterized in that: The skeleton body (130) is installed with a second position-limiting member (120), and the second position-limiting member (120) has a positioning portion (121) for assembling with the motor control board (700).

5. The motor frame according to claim 4, characterized in that: The second limiting member (120) has a limiting structure (122) protruding from the positioning portion (121) in the circumferential direction of the skeleton body (130), and the limiting structure (122) limits the movement of the motor control board (700) toward the skeleton body (130).

6. A motor, characterized in that: The invention comprises a stator (500) and a rotor matched with the stator (500), wherein the stator (500) comprises a stator core (200), a winding (400) and a motor frame (100) according to any one of claims 1 to 5, and the stator core (200) and the winding (400) are assembled on the motor frame (100).

7. A fan, characterized in that: It comprises an impeller, a volute and the motor as claimed in claim 6, wherein the impeller is located in the volute, and the motor is connected to the impeller.

8. An air conditioner, characterized in that: It comprises an outdoor unit, wherein the outdoor unit is equipped with the fan according to claim 7.

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